Ebay LED 110 VAC light bulb

I'm tempted to order a few of these. My experience with LED bulbs is that
they are focussed, so they shine a spot on the far wall instead of lighting
the room. Equal to 15 watt light bulb, too. Might be good for something?
Whole bunch of them screwed into a lighting strip, and pointed in various
directions? Maybe for a night light for the dark hallway?
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item60418062939
Ultra bright energy saving lamp, saving most energy than ordinary
lamps and brightness equal to 15W-20W lamps ability.It's a real green
bulb, soft light, no ultraviolet(UV) and infrared(IR) radiation.
Features:
Standard snail mouth
Direct alternative to the ordinary lamps, does not require any
conversion
Special energy saving
Only 2W-3W power consumption, saving 90% electricity energy
Ultra bright
42 LED bulbs, brightness equal to 15W-20W lamps ability
Friendly to health
No ultraviolet(UV) and infrared(IR) radiation
Long service life
The lamp of nomal usage lifetime is more than 30,000 hours
Wide voltage range
AC110-260V voltage range will work, fit for mostly countries in the
world
Specification:
Power : 3W
Light source : Cool or warm white light
LED Qty.: 42 pcs
Working voltage : AC 100-260V
interface : E27 spiral shell
Crustaceous materials : ABS plastic
Lifespan : more than 30,000 hours
Dimension: 80mm(Height ) x 58mm(Diameter)
Unit net weight: 40g
Unit packing gross weight: 56g

I recall you were looking for some LED lights for your work van and I
came across some very bright custom LED dome lights at Advance Auto
Parts yesterday while we were installing a new router with T1 and G3
communications links. I was wandering the aisles waiting for tech
support to call back and I saw all these LED light kits for cars and
trucks. Many of them had "Try Me" buttons and the newer LED's are very
bright. There were all kinds of different shapes with a lot of strips
and light ropes with square multi LED dome lights that put out a very
surprising amount of light.
TDD

E27 IS standard (medium) screw base for 240 volt, E26, technically,
for 120 volt. In practice they are the same. Also used for 12 volt..
It means Edison 27mm.
An E39 or E40 is a Mogul,E11 is Mini Candelebra, and E12 is
Candelebra Many others as well.
As a matter of interest, ONLY the E26/E27 is affected by the
incandescent lamp "ban" in the USA. All others are considered
"specialty"

In addition, the "A 19" that's mentioned would apply only to the bulb
envelope. Standard incandescent bulbs have a blown glass globe of arbitrary
or "A" shape that's measured in 1/8 in. increments; so, the A19 is 19/8 or 2
3/8 inches at the largest diameter.
Tomsic

I've been told that if they are wide-range voltage units (like 84-240)
they have switch mode power supplies in them, while single voltage
units are either series string or capacitive power supplies. In many
cases no half wave rectifier is used - the LEDs are their own
rectifier - and 2 strings back to back use full wave.

I question the "friendly to health claim". Most white-light LED light
sources generate blue light and then use a phosphor to convert some of that
blue to other colors; but the light from even the warm-toned LED lamps
contains substantial blue energy. That's OK during the daylight hours; but
may not be healthy (affects sleep quality and circadian rhythms) during the
evening or night time hours. There's lots of research on the subject dating
back now more than 20 years, but the lighting folks seem to be ignoring it.
Tomsic

What the hell is not made there.
Interesting price point. I would require color temperature before I buy
anything, although I did buy one from a us location, ended up pretty blue.
I have bought from a few china direct companies. Normally the shipping is
pretty cheap, but time varies.
So, the led does normally make a spot or small area pattern, but can be of
benefit that way.
Greg

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